Correct

加气

/ jiā qì / 
Strokes

Definition

to aerate/to ventilate

Example

As a Verb

refill CNG (compressed natural gas); refill LPG (liquefied petroleum gas)

1
LPG
LPG
jiāqì
加气

LPG filling station

2
CNG
CNG
jiāqì
加气

CNG filling station

As a Verb

aerate; entrain air